package com.sky.service.impl;

import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONObject;
import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.context.BaseContext;
import com.sky.dto.*;
import com.sky.entity.*;
import com.sky.exception.AddressBookBusinessException;
import com.sky.exception.OrderBusinessException;
import com.sky.exception.ShoppingCartBusinessException;
import com.sky.mapper.*;
import com.sky.properties.BaiduMapProperties;
import com.sky.result.PageResult;
import com.sky.service.OrderService;
import com.sky.utils.HttpClientUtil;
import com.sky.utils.WeChatPayUtil;
import com.sky.vo.OrderPaymentVO;
import com.sky.vo.OrderStatisticsVO;
import com.sky.vo.OrderSubmitVO;
import com.sky.vo.OrderVO;
import io.jsonwebtoken.lang.Collections;
import lombok.extern.slf4j.Slf4j;
import org.codehaus.jettison.json.JSONArray;
import org.codehaus.jettison.json.JSONException;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import java.math.BigDecimal;
import java.time.LocalDateTime;
import java.util.*;
import java.util.stream.Collectors;

/**
 * @author Zhang Maojie
 * @date 2024/3/25 20:47
 */
@Service
@Slf4j
public class OrderServiceImpl implements OrderService {
    @Autowired
    private OrderMapper orderMapper;
    @Autowired
    private OrderDetailMapper orderDetailMapper;
    @Autowired
    private AddressBookMapper addressBookMapper;
    @Autowired
    private ShoppingCartMapper shoppingCartMapper;
    @Autowired
    private WeChatPayUtil weChatPayUtil;
    @Autowired
    private UserMapper userMapper;
    @Autowired
    private BaiduMapProperties baiduMapProperties;
    @Autowired
    private WebSocketServer webSocketServer;

    @Override
    @Transactional
    public OrderSubmitVO submitOrder(OrdersSubmitDTO ordersSubmitDTO) throws JSONException {
        //处理各种异常，地址为空，购物车为空？
        AddressBook addressBook = addressBookMapper.getById(ordersSubmitDTO.getAddressBookId());
        if(addressBook == null) {
            throw new AddressBookBusinessException(MessageConstant.ADDRESS_BOOK_IS_NULL);
        }

        //校验是否超出配送范围 需要百度地图AK
//        checkOutOfRange(addressBook.getCityName()+addressBook.getDistrictName()+addressBook.getDetail());

        ShoppingCart shoppingCart = new ShoppingCart();
        Long currentId = BaseContext.getCurrentId();
        shoppingCart.setUserId(currentId);
        List<ShoppingCart> list = shoppingCartMapper.list(shoppingCart);
        if(list == null || list.size() == 0) {
            throw new ShoppingCartBusinessException(MessageConstant.SHOPPING_CART_IS_NULL);
        }
        //向订单表插入一条数据
        Orders orders = new Orders();
        BeanUtils.copyProperties(ordersSubmitDTO, orders);
        orders.setOrderTime(LocalDateTime.now());
        orders.setPayStatus(Orders.UN_PAID);
        orders.setStatus(orders.PENDING_PAYMENT);
        orders.setNumber(String.valueOf(System.currentTimeMillis()));
        orders.setPhone(addressBook.getPhone());
        orders.setConsignee(addressBook.getConsignee());
        orders.setUserId(currentId);
        orderMapper.insert(orders);
        //向订单明细表插入多条数据
        ArrayList<OrderDetail> orderDetailList = new ArrayList<>();
        for(ShoppingCart cart : list) {
            OrderDetail orderDetail = new OrderDetail();
            BeanUtils.copyProperties(cart, orderDetail);
            orderDetail.setOrderId(orders.getId()); //设置当前订单明细表关联的订单id
            orderDetailList.add(orderDetail);
        }
        orderDetailMapper.insertBatch(orderDetailList);
        //清空当前用户购物车数据
        shoppingCartMapper.cleanByUserId(currentId);
        //封装VO返回结果
        return OrderSubmitVO.builder().id(orders.getId()).orderNumber(orders.getNumber())
                .orderAmount(orders.getAmount()).orderTime(orders.getOrderTime()).build();
    }

    /**
     * 订单支付
     *
     * @param ordersPaymentDTO
     * @return
     */
    public OrderPaymentVO payment(OrdersPaymentDTO ordersPaymentDTO) throws Exception {
        // 当前登录用户id
        Long userId = BaseContext.getCurrentId();
        User user = userMapper.getById(userId);

        //调用微信支付接口，生成预支付交易单
        JSONObject jsonObject = weChatPayUtil.pay(
                ordersPaymentDTO.getOrderNumber(), //商户订单号
                new BigDecimal(0.01), //支付金额，单位 元
                "苍穹外卖订单", //商品描述
                user.getOpenid() //微信用户的openid
        );

        if (jsonObject.getString("code") != null && jsonObject.getString("code").equals("ORDERPAID")) {
            throw new OrderBusinessException("该订单已支付");
        }

        OrderPaymentVO vo = jsonObject.toJavaObject(OrderPaymentVO.class);
        vo.setPackageStr(jsonObject.getString("package"));

        return vo;
    }

    /**
     * 支付成功，修改订单状态
     *
     * @param outTradeNo
     */
    public void paySuccess(String outTradeNo) {

        // 根据订单号查询订单
        Orders ordersDB = orderMapper.getByNumber(outTradeNo);

        // 根据订单id更新订单的状态、支付方式、支付状态、结账时间
        Orders orders = Orders.builder()
                .id(ordersDB.getId())
                .status(Orders.TO_BE_CONFIRMED)
                .payStatus(Orders.PAID)
                .checkoutTime(LocalDateTime.now())
                .build();

        orderMapper.update(orders);

        //推送消息给管理端浏览器
        HashMap<Object, Object> map = new HashMap<>();
        map.put("type", 1);
        map.put("orderId", ordersDB.getId());
        map.put("content", "订单号"+outTradeNo);
        String jsonString = JSON.toJSONString(map);
        webSocketServer.sendToAllClient(jsonString);
    }

    @Override
    public PageResult pageQueryHistory(Integer page, Integer pageSize, Integer status) {
        PageHelper.startPage(page, pageSize);
        OrdersPageQueryDTO ordersPageQueryDTO = new OrdersPageQueryDTO();
        ordersPageQueryDTO.setStatus(status);
        ordersPageQueryDTO.setUserId(BaseContext.getCurrentId());
        Page<Orders> pages = orderMapper.pageQuery(ordersPageQueryDTO);

        List<OrderVO> list = new ArrayList<>();
        if(pages != null && pages.getTotal()>0) {
            for (Orders orders : pages) {
                Long orderId = orders.getId();
                //查询订单明细
                List<OrderDetail> orderDetails = orderDetailMapper.getByOrderId(orderId);
                OrderVO orderVO = new OrderVO();
                BeanUtils.copyProperties(orders, orderVO);
                orderVO.setOrderDetailList(orderDetails);
                list.add(orderVO);
            }
        }

        return new PageResult(pages.getTotal(), list);
    }

    @Override
    public OrderVO details(Long id) {
        OrderVO orderVO = new OrderVO();
        Orders orders = orderMapper.getById(id);
        List<OrderDetail> byOrderId = orderDetailMapper.getByOrderId(orders.getId());
        BeanUtils.copyProperties(orders, orderVO);
        orderVO.setOrderDetailList(byOrderId);
        return orderVO;
    }

    //用户取消订单
    @Override
    public void userCancelById(Long id) throws Exception {
        Orders orders = orderMapper.getById(id);
        if(orders == null) {
            throw new OrderBusinessException(MessageConstant.ORDER_NOT_FOUND);
        }
        //订单状态 1待付款 2待接单 3已接单 4派送中 5已完成 6已取消
        if (orders.getStatus() > 2) {
            throw new OrderBusinessException(MessageConstant.ORDER_STATUS_ERROR);
        }

        Orders ordersNew = Orders.builder().id(orders.getId()).build();
        //订单在待接单状态需退款
        if (orders.getStatus().equals(Orders.TO_BE_CONFIRMED)) {
            weChatPayUtil.refund(
                    orders.getNumber(), //商户订单号
                    orders.getNumber(), //商户退款单号
                    new BigDecimal(0.01),//退款金额，单位 元
                    new BigDecimal(0.01));//原订单金额

            //支付状态修改为 退款
            orders.setPayStatus(Orders.REFUND);
        }
        //更新订单状态、取消原因、取消时间
        ordersNew.setStatus(Orders.CANCELLED);
        ordersNew.setCancelReason("用户取消！");
        ordersNew.setCancelTime(LocalDateTime.now());
        orderMapper.update(ordersNew);
    }

    @Override
    public void repetition(Long id) {
        Long currentUserId = BaseContext.getCurrentId();
        List<OrderDetail> orderDetails = orderDetailMapper.getByOrderId(id);
        // 将订单详情对象转换为购物车对象
        List<ShoppingCart> shoppingCartList = orderDetails.stream().map(x -> {
            ShoppingCart shoppingCart = new ShoppingCart();
            BeanUtils.copyProperties(x, shoppingCart, "id");
            shoppingCart.setUserId(currentUserId);
            shoppingCart.setCreateTime(LocalDateTime.now());
            return shoppingCart;
        }).collect(Collectors.toList());
        // 将购物车对象批量添加到数据库
        shoppingCartMapper.insertBatch(shoppingCartList);
    }

    @Override
    public PageResult pageQuerySearch(OrdersPageQueryDTO ordersPageQueryDTO) {
        PageHelper.startPage(ordersPageQueryDTO.getPage(), ordersPageQueryDTO.getPageSize());
        Page<Orders> p = orderMapper.pageQuery(ordersPageQueryDTO);

        //返回订单菜品信息
        List<OrderVO> orderVOList = getOrderVOList(p.getResult());

        return new PageResult(p.getTotal(), orderVOList);
    }

    @Override
    public OrderStatisticsVO statistics() {
        Integer toBeConfirmed = orderMapper.countStatus(Orders.TO_BE_CONFIRMED);
        Integer confirmed = orderMapper.countStatus(Orders.CONFIRMED);
        Integer deliveryInProgress = orderMapper.countStatus(Orders.DELIVERY_IN_PROGRESS);

        OrderStatisticsVO orderStatisticsVO = new OrderStatisticsVO();
        orderStatisticsVO.setConfirmed(confirmed);
        orderStatisticsVO.setToBeConfirmed(toBeConfirmed);
        orderStatisticsVO.setDeliveryInProgress(deliveryInProgress);
        return null;
    }

    @Override
    public void confirm(OrdersConfirmDTO ordersConfirmDTO) {
        Orders orders = Orders.builder().id(ordersConfirmDTO.getId()).status(ordersConfirmDTO.getStatus()).build();
        orderMapper.update(orders);
    }

    @Override
    public void rejection(OrdersRejectionDTO ordersRejectionDTO) throws Exception {
        Orders ordersDB = orderMapper.getById(ordersRejectionDTO.getId());

        if(ordersDB == null || !ordersDB.getStatus().equals(Orders.TO_BE_CONFIRMED)) {
            throw new OrderBusinessException(MessageConstant.ORDER_STATUS_ERROR);
        }

        Integer statusPay = ordersDB.getPayStatus();
        if (statusPay == Orders.PAID) {
            String refund = weChatPayUtil.refund(
                    ordersDB.getNumber(),
                    ordersDB.getNumber(),
                    new BigDecimal(0.01),
                    new BigDecimal(0.01));
            log.info("申请退款：{}", refund);
        }
        Orders orders = new Orders();
        orders.setId(ordersDB.getId());
        orders.setStatus(Orders.CANCELLED);
        orders.setRejectionReason(ordersRejectionDTO.getRejectionReason());
        orders.setCancelTime(LocalDateTime.now());
        orderMapper.update(orders);
    }

    @Override
    public void cancel(OrdersCancelDTO ordersCancelDTO) throws Exception {
        // 根据id查询订单
        Orders ordersDB = orderMapper.getById(ordersCancelDTO.getId());

        //支付状态
        Integer payStatus = ordersDB.getPayStatus();
        if (payStatus == 1) {
            //用户已支付，需要退款
            String refund = weChatPayUtil.refund(
                    ordersDB.getNumber(),
                    ordersDB.getNumber(),
                    new BigDecimal(0.01),
                    new BigDecimal(0.01));
            log.info("申请退款：{}", refund);
        }

        // 管理端取消订单需要退款，根据订单id更新订单状态、取消原因、取消时间
        Orders orders = new Orders();
        orders.setId(ordersCancelDTO.getId());
        orders.setStatus(Orders.CANCELLED);
        orders.setCancelReason(ordersCancelDTO.getCancelReason());
        orders.setCancelTime(LocalDateTime.now());
        orderMapper.update(orders);
    }

    @Override
    public void delivery(Long id) {
        // 根据id查询订单
        Orders ordersDB = orderMapper.getById(id);

        // 校验订单是否存在，并且状态为3
        if (ordersDB == null || !ordersDB.getStatus().equals(Orders.CONFIRMED)) {
            throw new OrderBusinessException(MessageConstant.ORDER_STATUS_ERROR);
        }

        Orders orders = new Orders();
        orders.setId(ordersDB.getId());
        // 更新订单状态,状态转为派送中
        orders.setStatus(Orders.DELIVERY_IN_PROGRESS);

        orderMapper.update(orders);
    }

    @Override
    public void complete(Long id) {
        Orders ordersDB = orderMapper.getById(id);

        if(ordersDB == null || !ordersDB.getStatus().equals(Orders.DELIVERY_IN_PROGRESS)) {
            throw new OrderBusinessException(MessageConstant.ORDER_STATUS_ERROR);
        }

        Orders orders = new Orders();
        orders.setStatus(Orders.COMPLETED);
        orders.setId(ordersDB.getId());
        orders.setDeliveryTime(LocalDateTime.now());
        orderMapper.update(orders);
    }

    @Override
    public void reminder(Long id) {
        Orders ordersDB = orderMapper.getById(id);

        if(ordersDB == null) {
            throw new OrderBusinessException(MessageConstant.ORDER_STATUS_ERROR);
        }
        Map map = new HashMap();
        map.put("type", 2);
        map.put("orderId", id);
        map.put("content", "订单号"+ordersDB.getNumber());
        String json = JSON.toJSONString(map);
        webSocketServer.sendToAllClient(json);
    }

    public List<OrderVO> getOrderVOList(List<Orders> ordersList) {
        ArrayList<OrderVO> orderVOS = new ArrayList<>();
        if(!Collections.isEmpty(ordersList)) {
            for (Orders orders : ordersList) {
                OrderVO orderVO = new OrderVO();
                BeanUtils.copyProperties(orders, orderVO);
                String orderDishes = getOrderDishesStr(orders);

                orderVO.setOrderDishes(orderDishes);
                orderVOS.add(orderVO);
            }
        }
        return orderVOS;
    }

    public String getOrderDishesStr(Orders orders) {
        List<OrderDetail> orderDetails = orderDetailMapper.getByOrderId(orders.getId());
        List<String> orderDishList = orderDetails.stream().map(x -> {
            String orderDish = x.getName() + "*" +x.getNumber() + ";";
            return orderDish;
        }).collect(Collectors.toList());
        return String.join("", orderDishList);
    }

    /**
     * 检查客户的收货地址是否超出配送范围
     * @param address
     */
    private void checkOutOfRange(String address) throws JSONException {
        Map map = new HashMap();
        map.put("address",baiduMapProperties.getShopAddress());
        map.put("output","json");
        map.put("ak",baiduMapProperties.getAk());

        //获取店铺的经纬度坐标
        String shopCoordinate = HttpClientUtil.doGet("https://api.map.baidu.com/geocoding/v3", map);

        JSONObject jsonObject = JSON.parseObject(shopCoordinate);
        if(!jsonObject.getString("status").equals("0")){
            throw new OrderBusinessException("店铺地址解析失败");
        }

        //数据解析
        JSONObject location = jsonObject.getJSONObject("result").getJSONObject("location");
        String lat = location.getString("lat");
        String lng = location.getString("lng");
        //店铺经纬度坐标
        String shopLngLat = lat + "," + lng;

        map.put("address",address);
        //获取用户收货地址的经纬度坐标
        String userCoordinate = HttpClientUtil.doGet("https://api.map.baidu.com/geocoding/v3", map);

        jsonObject = JSON.parseObject(userCoordinate);
        if(!jsonObject.getString("status").equals("0")){
            throw new OrderBusinessException("收货地址解析失败");
        }

        //数据解析
        location = jsonObject.getJSONObject("result").getJSONObject("location");
        lat = location.getString("lat");
        lng = location.getString("lng");
        //用户收货地址经纬度坐标
        String userLngLat = lat + "," + lng;

        map.put("origin",shopLngLat);
        map.put("destination",userLngLat);
        map.put("steps_info","0");

        //路线规划
        String json = HttpClientUtil.doGet("https://api.map.baidu.com/directionlite/v1/driving", map);

        jsonObject = JSON.parseObject(json);
        if(!jsonObject.getString("status").equals("0")){
            throw new OrderBusinessException("配送路线规划失败");
        }

        //数据解析
        JSONObject result = jsonObject.getJSONObject("result");
        JSONArray jsonArray = (JSONArray) result.get("routes");
        Integer distance = (Integer) ((JSONObject) jsonArray.get(0)).get("distance");

        if(distance > 5000){
            //配送距离超过5000米
            throw new OrderBusinessException("超出配送范围");
        }
    }
}
